ASTROSAT CZTI

Data Quality Report

Orbit 07226

Creation date: 2024-06-27T15:17:31.932203
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G06_036T01_9000000988_07226cztM0_level2.evt modeM0/AS1G06_036T01_9000000988_07226cztM0_level2_quad_clean.evt
Size (bytes)474,773,76072,408,960
Size452.8 MB 69.1 MB
Events in quadrant A3,217,319428,169
Events in quadrant B3,274,570440,170
Events in quadrant C3,573,543435,550
Events in quadrant D3,854,027417,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014391288
B014434276
C015519286
D016678603

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01435
B01422
C01404
D01404

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67511762.607021%
B67521882.784360%
C67591372.026927%
D67471462.163925%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7031 6776 1 1 0.01% 0.01%
B 7040 6773 0 0 0.00% 0.00%
C 7041 6787 28 28 0.40% 0.41%
D 7025 6766 42 42 0.60% 0.62%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 77715 461.38 804 782 166.7
A 13 248 27252 158.75 804 782 166.7
A 3 1 9508 52.33 804 782 166.7
B 0 214 50593 312.11 814 794 159.6
B 12 0 17523 104.85 814 794 159.6
B 12 111 16628 99.24 814 794 159.6
C 9 68 479787 2576.98 789 792 185.9
C 13 61 5959 27.8 789 792 185.9
C 8 128 5896 27.46 789 792 185.9
D 2 216 289744 1484.7 783 760 194.6
D 13 137 261696 1340.6 783 760 194.6
D 14 34 148817 760.66 783 760 194.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter